Here is an expert from the maintenance manual for the spindle nut torque specs for the 2.5 ton rockwell axle. It is not included in the more detailed rebuild manual and it is helpful. I always use the “feel” method for wheel bearings where you tighten the bearing preload until you just can’t spin the wheel, and then back the nut off about 1/4 turn. Then do a drive test to make sure that the heat doesn’t get too high. I do this for all of my wheel bearings and haven’t had any problems.
Of course you may want more technical specs. Here is an expert from the maintenance section:
Spindle nut torque for rockwell 2.5 ton axle
Note: Wheel must turn freely prior to wheel bearing adjustment. Adjustment procedures for front and rear wheel bearings are the
1. Bend tabs back on adjusting nut washer (2) and remove outer adjusting nut (1) and washer (2).
2. Turn wheel, tighten inner adjusting nut (3) 50 lb-ft (68 NŽm), then back off nut (3) 1/16 to 1/4 turn.
3. Install adjusting nut washer (2) and outer adjusting nut (1). Tighten nut (1) 100-200 lb-ft (136-272 NŽm).
4. Bend tabs on adjusting nut washer (2) down, over inner and outer adjusting nuts (3) and (1).
Here is the image on Rockwell Wheel Bearing Adjustment